Guaifen-C and heart rate

Have been taking for over a year. When I ran out a month ago I got the worst ear ache of my life. My sinus' blocked up and busted my ear drums. I have never experienced pain like that in my life. I take just once a morning. 600/120 type pills. I sleep on the average 9 hours a night. I'm now truly scared to go without it. My pharmasist said not to take it on the day of my upcoming marathon in June due to possibility of heart rate issues. She didn't mention anything about dehydration. I'll be taking it the very next day.

I have been recently been taking guaifen and the past few nights i have experienced weird dreams and i have not been able to sleep very well. this drug speeds up my heart rate and makes me very hyper. i also have difficulty speaking. i have been very silent over the past few days. the drug works though i don't have a cough anymore.

Have had insomnia for 3 days on this med, after specifically telling the MD (not my regular doctor) that I had trouble with pseudoephedrine. My heart rate was very rapid and irregular. I am also an athelete, and drink tons of water. This medication wasn't in my PDR, so thanks to this web site I have found what the culpret is, and it isn't menapause!!!!

Don't read all of these posts. I personally have not had much of a problem, let me explain...

I think most of these people exaggerate, and their problems are caused by dehydration. When taking this medication you have to drink excess water, not just the daily amount you should already be drinking. The people with serious problems probably drink lots of coffee or soda with caffeine instead of water. This product basically has ephedrine in it, so it increases your heart rate, and caffeine will compound that problem and the dehydration as caffeine has diuretic effects. A lot of these people probably also took a diet pill and didnt tell their doctor, and that will increase the problems substantially, especially if people are also on a low calorie intake diet. It also constricts blood ways, so if you smoke or you have heavily clogged blood ways already you will most likely have a problem.

You can expect to lose weight though, how about that as a positive side effect.

I would bet that 90% of the problem people on here did not follow the directions with the medication.

I run a lot so that makes me tired after I have already taken the medication twice, so I have not noticed much sleep loss, but you should take this with breakfast and lunch not with dinner.

When I took this with the antibiotic I would occasionally experience abnormal heart beats, but when I stopped taking the antibiotic that stopped, probably because I wasn't supposed to be exposed to a lot of sun, and I live in SO CAL. Read the warnings on all of your medication and tell your doctor about all of the over the counter stuff you take including diet pills.